<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<!DOCTYPE html>
<html lang="zh-CN">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>404 - 页面未找到</title>
    <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.0/dist/css/bootstrap.min.css" rel="stylesheet">
    <link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/bootstrap-icons@1.10.0/font/bootstrap-icons.css">
    <style>
        .error-container {
            min-height: 100vh;
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .error-card {
            background: white;
            border-radius: 20px;
            padding: 3rem;
            text-align: center;
            box-shadow: 0 20px 40px rgba(0,0,0,0.1);
        }
    </style>
</head>
<body>
<div class="error-container">
    <div class="error-card">
        <i class="bi bi-emoji-frown display-1 text-warning mb-4"></i>
        <h1 class="display-4 fw-bold text-primary mb-3">404</h1>
        <h3 class="mb-4">页面未找到</h3>
        <p class="text-muted mb-4">抱歉，您访问的页面不存在或已被移动。</p>
        <a href="${pageContext.request.contextPath}/" class="btn btn-primary btn-lg">
            <i class="bi bi-house-door me-2"></i>返回首页
        </a>
    </div>
</div>
</body>
</html>